His eyebrows shoot right back up toward his hairline as he considers the strange sphere anew. "Sentient?" Humans have been known to worship the strangest things before, but he'd like to think these ones are a little beyond idols and natural phenomena. Besides, that sort of placement is not an accident, and if they did not place it there, who did?

The design may not be similar, but the sight of turrets bristling over the City reminds him of Asgard, at least a little. Fresh on the mind, since he was there again only today, the weight of Mjolnir at his hip reminding him that it was not a dream. "It's impressive," he says, peering here and there as they pass ships and structures both. "I'm guessing you don't get visitors terribly often."